Who built Auschwitz and why?
Auschwitz opened in May 1940 as a very harsh concentration camp for Polish intellectuals and Polish resisters. The extermination camp (Birkenau or Auschwitz II) was added in 1941-42, and the huge chemicals conglomerate IG-Farben was allowed to build its own concentration camp at Monowitz (Auschwitz III), where they made various chemicals using the prisoners as unpaid labour. In addition, there were a further 35 sub-camps.